Improvement in windmills



UNITED STATES y PATENT OFFICE.

JAMES IV. NEFF, OF SACRAMENTO, CALIFORNIA.

IMPROVEMENT IN WlNDMILLS.

Specification forming part of Letters Patent No. 25,908, dated October25, 1829.

To all whom it may concern:

Be it known that I, JAMES WV. NEFF, ofthe town of Sacramento, county ofSacramento, and State of California, have invented a new and usefulImprovement in Vindmills; and I d0 hereby declare that the following isa clear and exact description thereof, reference being had to theaccompanying drawing.

The drawing is a perspective view of the entire windmill.

To enable others skilled in the art to make and use my invention,I willdescribe its construction and operation.

A is the spiral spring, made of any suitable material and in size andproportion to the size of the sails, and this spring is placed on themain shaft between the hub and `the flange B. The ange B is made ofcast-iron about from six to twelve inches in diameter and one-half inchthick, and has holes in it to receive the rods F, which connect it withthe sails.

C is the shaft, on which is placed the spiral spring A, and whichextends out in front of the sails from three to eight feet and maybemade of cast or wrought iron.

D is the sails,and maybe made of anysuitable material, such as iron,zinc, Wood, or cloth, and are attache-d to the spokes or arms by meansof butts or hinges to allow them to swing backward and forward whendesired.

E is the cast-iron hub, which is made of two pieces with spaces betweento receive the spokes or arms of the Wind-wheel or sails, and are boltedtogether firmly to hold the arms or spokes, and has also a hole in thecenter to slip on the shaft C.

F are the connecting-rods, of iron or any suitable material,whichconnect the sails with the flange B. They are made to fasten with endhook and eye, or with a screw and nut, so that they can be shortenedorlengthened, as may be desired. By this arrangement it will be seenthat the Operation of my invention allows the sails to regulatethemselves by the pressure of the wind, for the harder it blows thefarther open the sails become, so that my windmill will make the samenumber of revolutions in a high or low wind. This allows the fury of thestorm to pass through the sails without endangering the safety of themill and avoids the possibility of blowing 1t down.

Having thus described the construction and operation of my invention,what I claim is- The arrangement ot' the sails D, arms or spokes G, andhub E, as described, and placing them in rear of the spiral spring A andflange B, and connecting flange B with sails D by rods F, the wholeoperating as described, and for the purposes set forth.

JAMES W. NEFF. [L s] Witnesses:

R. S. CAMPBELL, T. E. LLOYD.

